oj.uz

Submission #927186

# Submission time Handle Problem Language Result Execution time Memory
927186 2024-02-14T11:18:29 Z VMaksimoski008 Connecting Supertrees (IOI20_supertrees) C++14
21 / 100
 183 ms 24144 KB 
#include <bits/stdc++.h>
#include "supertrees.h"

#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long

using namespace std;

using ll = long long;
using ull = unsigned long long;
using ld = long double;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
const double eps = 1e-9;

struct DSU {
    int n, comp;
    vector<int> par, size;

    void config(int _n) {
        n = _n + 1;
        comp = _n;
        par.resize(n+1);
        size.resize(n+1, 1);
        for(int i=1; i<=n; i++) par[i] = i;
    }

    int get(int u) {
        if(u == par[u]) return u;
        return par[u] = get(par[u]);
    }

    bool uni(int u, int v) {
        u = get(u), v = get(v);

        if(u == v) return false;
        if(size[u] < size[v]) swap(u, v);

        size[u] += size[v];
        par[v] = u;
        comp--;

        return true;
    }

    int getComp() { return comp; }
    int getSize(int u) { return size[get(u)]; }
    bool sameSet(int u, int v) { return get(u) == get(v); }
};

int construct(vector<vector<int> > p) {
    int n = p.size();
    vector<int> cnt(3);

    for(int i=0; i<n; i++)
        for(int j=0; j<n; j++) cnt[p[i][j]]++;

    if(cnt[0] + cnt[1] == n*n) {
        DSU dsu; dsu.config(n);
        vector<vector<int> > B(n, vector<int>(n, 0));

        for(int i=0; i<n; i++) {
            for(int j=0; j<n; j++) {
                if(p[i][j] == 1)
                    if(dsu.uni(i, j)) B[i][j] = B[j][i] = 1;
            }
        }

        for(int i=0; i<n; i++) {
            for(int j=0; j<n; j++) {
                if(p[i][j] == 1 && !dsu.sameSet(i, j)) return 0;
                if(p[i][j] == 0 && dsu.sameSet(i, j)) return 0;
            }
        }

        build(B);
        return 1;
    } else {
        DSU dsu, dsu2;
        dsu.config(n), dsu2.config(n);
        vector<vector<int> > B(n, vector<int>(n, 0));

        for(int i=0; i<n; i++) {
            for(int j=0; j<n; j++) {
                if(p[i][j] == 2) {
                    if(!dsu.sameSet(i, j) && !dsu2.sameSet(i, j)) {
                        dsu.uni(i, j);
                        B[i][j] = B[j][i] = 1;
                    }  else if(dsu.sameSet(i, j) && !dsu2.sameSet(i, j)) {
                        dsu2.uni(i, j);
                        B[i][j] = B[j][i] = 1;
                    }
                }
            }
        }

        for(int i=0; i<n; i++) {
            for(int j=0; j<n; j++) {
                if(p[i][j] == 0) {
                    if(dsu.sameSet(i, j) || dsu2.sameSet(i, j)) return 0;
                } else {
                    if(!dsu.sameSet(i, j) || !dsu2.sameSet(i, j)) return 0;
                }
            }
        }

        build(B);
        return 1;
    }

    return 1;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 152 ms 21996 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 152 ms 21996 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 149 ms 22356 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 69 ms 12044 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 5720 KB Output is correct
21 Correct 151 ms 22140 KB Output is correct
22 Correct 148 ms 22096 KB Output is correct
23 Correct 162 ms 22020 KB Output is correct
24 Correct 148 ms 22100 KB Output is correct
25 Correct 62 ms 12036 KB Output is correct
26 Correct 60 ms 12036 KB Output is correct
27 Correct 154 ms 22020 KB Output is correct
28 Correct 150 ms 22100 KB Output is correct

Subtask #3
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
5 Halted 0 ms 0 KB -

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 38 ms 6228 KB Output is correct
5 Correct 155 ms 24144 KB Output is correct
6 Correct 147 ms 23940 KB Output is correct
7 Correct 183 ms 24096 KB Output is correct
8 Incorrect 0 ms 348 KB Too many ways to get from 0 to 3, should be 2 found no less than 3
9 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 152 ms 21996 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 149 ms 22356 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 69 ms 12044 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 5720 KB Output is correct
21 Correct 151 ms 22140 KB Output is correct
22 Correct 148 ms 22096 KB Output is correct
23 Correct 162 ms 22020 KB Output is correct
24 Correct 148 ms 22100 KB Output is correct
25 Correct 62 ms 12036 KB Output is correct
26 Correct 60 ms 12036 KB Output is correct
27 Correct 154 ms 22020 KB Output is correct
28 Correct 150 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 7 ms 1116 KB Output is correct
7 Correct 152 ms 21996 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 6 ms 1116 KB Output is correct
13 Correct 149 ms 22356 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 69 ms 12044 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 37 ms 5720 KB Output is correct
21 Correct 151 ms 22140 KB Output is correct
22 Correct 148 ms 22096 KB Output is correct
23 Correct 162 ms 22020 KB Output is correct
24 Correct 148 ms 22100 KB Output is correct
25 Correct 62 ms 12036 KB Output is correct
26 Correct 60 ms 12036 KB Output is correct
27 Correct 154 ms 22020 KB Output is correct
28 Correct 150 ms 22100 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Incorrect 1 ms 348 KB Answer gives possible 1 while actual possible 0
33 Halted 0 ms 0 KB -